Oil burner



May 29, 1923.

' F. HARUiNGE OIL BURNER Filed May 16. 1921 FRANKLIN EABDINGE, OF CHICAGO, ILLINOIS, ASSIGNOR TO HABDING-E BROTHERS,

INC., 0F CHICAGO, ILLINOIS, A COBPRATION 0F ILLINOIS.

OIL BURNER.

Application led May 16, 1921. Serial No. 470,208.

To aZZ whom t may conc-em.'

Be it known that I, FRANKLIN HARDINGE, a citizen of the United States, and resident of Chicago, in the county olf Cook and State of Illinois, have invented a certain new and useful Improvement in Oil Burners, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

y invention relates to improvements in oil burners and is particularly concerned with oil burners of that t e in which an electric motor or other simi ar motor actuates means for atomizing the oil.

The objects of my invention are First-to provide an oil burner of the character described comprising means for automatically de-energizing a motor, whenever for an reason whatever, the flame of the burner 1s extinguished.

Secondto provide means, such as described, eomprising means actuated thru the power of the motor, but controlled by the flow of unconsumed oil from the burner, and

Third-.to provide means of the character described, which is simple in construction, reliable, and economical to manufacture.

ther objects will appear as this description progresses. reference bein had to the accompanying drawing in whic Figure 1 is a plan View of portions of the oil burner embodying my invention,

Figure 2 is a side elevation thereof, showi ing certain details of my invention in eleva-- tion, portions of this figure being in section,

Figure 3 is a sectional detail taken substantially on line 3-3 of Figure 2, and

- Figure 4 is a horizontal section taken'on line 4-4 of Figure 3.

Thron hout the several views similar reference caracters will be used to refer to similar parts.

In myi accompanying application Serial No. 380,794 I have illustrated and described a furnace comprising a fire bed 5, preferably formed of tire clay, or any suitable refractory material, which is supported by a plurality of sector shaped plates 6, which incline downwardly toward and rest upon the upturned edge 7, of the annular lchannel 8, forming part of the conical air conduit 9. Slidacl mounted within the conduit 9 is a rotatabe atomizing nozzle 10 driven thru a suitable gear on the shaft 11, which is in adjustable screw 32 whic y press upon the push-button 19 and urge it aforesaid application and further reference thereto is unnecessary. In my present application I provide means for automatically de-energizing the motor 12 whenever, for any reason whatever, the llame of the burner 10 is extinguished and the oil continues to flow thru the burner.

This means comprises a standard switch which is closed by pushing upon the push-button 18 and opened by pushing upon the push-button 19. The switch itself is enclosed in a suitable housing 20, one side wall of which has a thickened portion 21 in which is cut a groove 22 for receiving the slide bar 23. The slide bar 23 is held in place by means of a cover plate 24 which is secured to the side of the housin by means of the screw 25 and is provideg with the slot 26 thru which the stud 27, secured to the slide bar 23 projects. A lever 28 is pivotally mounted upon the stud 27 and is held thereon by means of the washer 29 and cotter pin 3o.

One end ofthe slide bar-23 has an angularly extending portion 31 which overhan the push-button 19 and isr rovided with an li is adapted to into position to open the switch 17 when the slide bar 23 is moved in the proper direction.

The plate 24 has two outwardly ext/ending lugs 33 and 34 which are adapted to en age the upper edge of the lever 28 and act as imiting stops to limit the movement of the lever 28 1n either direction.

The housing 20 is provided with two out-` lets 35 and 36 for conducting the conductors 37 and 38 respectively to the interior of the housing and to the switch. The con; ductors 37 and 38 form a part of the circuit for supplying electricity tc the motor 12.

The channel 8 is provided with a short drain pipe 40 which discharges into a hollow boss 41 extending upwardly from the bottom of the trough 42 and having an outlet opening 43 forming the side thereof. The C annel 8 preferably has the edge thereof I' or opening 43 should become stopped cut away, auxiliary thelever 28 from tilting until a predetermined quantity of oil has been discharged Yinto the bucket 46. The arm of the leverv 28 which carries the conduit L17 is bent at an angle to the remaining portion of the lever, as shown in Figure 2, to provide an abutment surface 49 which, when the lever 28 is rotated in a clockwise direction under the weight of the contents of the bucket 46 will be positioned directly in the 'path of the pin 50 carried by the shaft 16 and projecting parallel with the axis of this shaft. lVhen this occurs the pin 50, being driven by the motor as described, Will engage the end 49 of the lever and push it bodily toward the burner 10, thereby causing the stud 27 to move in the same direction in the slot 26. The stud 27 carries the slide bar 23 with it and causes the pin 32 to push the button 19 inwardly, thereby opening the switch and de-energizing the motor 12. When this happens, the pump 13 no longer operates and no oil will be supplied to the burner 10. In this manner I provide means for preventing the furnace heated by the burner, from becoming flooded with fuel oil upon the extinction of the burner flame.

A It should be noted that when the automatic device has been actuated to open the switch, the screwl 32 will be so positioned in front of the push-button 19 that it will "be impossible to start the motor until the safety device has been reset. This will prevent the starting of the motor without the safety apparatus being properly ad- )us/ted. f While I have described the details of construction of the preferred embodiments of intense my invention, it is to be clearly understood that my invention is not limited to these details,.but is capable of other adaptations and modifications Within the scope of the appended claims:

l. The ycombination with an oil burner comprising a rotary atomizing nozzle and a motor for rotating said nozzle of a switch for starting and stopping said motor, a slide bar having a progection for actuating said switch to stop said motor, a lever pivotally mounted upon said slide bar, a cup .on one end of said lever, a counter weight on the other end of said lever for holding said cup in an elevated position, means for collecting unconsumed oil from said atomizing nozzle, means for discharging said unconsumed oil into said cup, and means, driven by said motor for engaging a portion of said lever when said cup is depressed by the weight of its contents, to actuate said slide bar to open said switch.

2. The combination with an oil burner comprising a rotary atomizing nozzle and a motor for rotating said nozzle of a movably mounted member for actuating said switch to its open osition, mea-ns for collecting unconsurne oil discharged from said atomizing nozzle, and means controlled by said collected? oil and actuated by said motor for moving said member to actual. said switch to its o en position.

3. The combination with an oil burner having an atomizing nozzle, and a motor, oa switch for startin and stopping said pieter, means for col ecting unconsumed Voil dischar ed from said nozzle, and means controlled y said unconsumed oil and actuated by said motor, for moving said switch.

to its open position. I

vIn witness whereof, I hereunto subscribe my name this 411th da ofMay, 1921'.

FRAN IN HARDINGE. Witnesses:

.ALBIN C. Ammiano,

EMILE J. BOURGEOIS. 

